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Natural abundance nitrate isotopes from Rifle and the East River Watershed, Colorado

Creators: Nicholas J. Bouskill ORCID, Patrick Sorensen, Mark Conrad ORCID, Markus Bill ORCID, Taylor Maavara ORCID, Alexander Newman, Eoin Brodie ORCID, Kenneth Williams

Year: 2020

DOI: 10.15485/1660462

License: CC-BY 4.0

Location: The East River (ER) is a snow‐dominated, headwater basin of the Upper Colorado River Basin (UCRB) located in the western United States. The ER is the designated testbed of Lawrence Berkeley National Laboratory's Watershed Function Scientific Focus Area (WFSFA). Through WFSFA, observational networks have been established to measure stream discharge and precipitation chemistry.The ER is considered representative of many snow‐dominated headwaters of the Rocky Mountains. The study domain encompasses nearly 85 square km, a 1.4‐km vertical drop in elevation (4,120 to 2,760 m) and pristine alpine, subalpine, montane, and riparian ecosystems. The ER contains high‐energy mountain streams to low‐energy meandering floodplains and is eroding primarily into the Cretaceous, carbon‐rich, marine shale of the Mancos Formation.

Temporal extent: 2014-03-01 to 2019-10-19

Bounding box: 38.880°N to 39.034°N, -107.050°W to -106.880°W

Publisher: ESS_DIVE

Tags: Nitrate, Isotope, Natural abundance, Nitrogen cycle, Biogeochemical, CATEGORICAL:NONE EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY, EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GROUND WATER, CATEGORICAL:GCMD Anions, Isotopes, Alpine & Subalpine Ecology, Hydrology & Watersheds, Snow & Ice, Groundwater, Geology & Tectonics, Soil Science, Weather & Atmospheric Science, RMBL & Gothic, Gunnison Basin, Research Programs

Description

This data package provides data on the natural abundance isotopes of nitrate from various sources, including porewater, stream, and precipitation. The overall purpose of this data package is to complement additional data streams for nitrogen cycling metrics (e.g., riverine inorganic and organic nitrogen measurements) with specific data gleaned from the interpretation of terrestrial and riverine isotope measurements and collectively understand on how nitrogen is cycled around this system. The Rifle and East River are part of the Watershed Function Scientific Focus Area (WFSFA) located in the Upper Colorado River Basin, United States. Collection locations include: Pumphouse (multiple sampling dates), River (upstream/ downstream meander C), Shallow soil lysimeters (hillslope, toeslope, floodplain), Hillslope-floodplain borehole wells (i.e., Pumphouse Lower Montane (PLM) wells), and Potassium chloride(KCL)-extracted soil samples. Copper Creek sampling includes 8x river sample points and two tributaries sampled on Sept. Oct. 2017, July 2018. East River below the Rocky Mountain Biological Laboratory sampling includes 1 access point sampled on July, Sept. Oct. 2017. Rifle floodplain sampling includes well TT03 across multiple collection times over 2014. Data is provided in 5 individual files by location in csv format, or all compiled in Excel format.

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